Stropper



March 10, 1931.

M. L. LUEBBEN STROPPER Filed June -9, 1927 2 Sheets-Sheet 1 BYWC wd.

firToKM/EX' Patented Mar. 10, 1931 UNITED STATES PATENT OFFICE MELCHIOR L LUEBBEN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO SUPER STBOP- PER MANUFACTURING- COMPANY, OF LOS ANGELES, CALIFORNIA, A PARTNER- SHIP COMPOSED OF 1V.[.'L. LUEBBEN AND W. N. SMITH s'rnorrnn Application filed .Tune 9, 1927. Serial No. 197,534.

My invention relates to improvements in stroppers for safety-razor blades, and has for its object to provide a mechanism capable of being conveniently carried in the users pocket, having a two-part outer case or housing, which parts are moved toward and from each other to actuate their contained stropping mechanism.

That stropping mechanism comprises a tilting blade-holder, and stropping disks with those faces the blade being stropped is given stropping contact by means of the blade-tilting mechanism.

Other features of my invention relate to the mechanism for detachably holding the blade in place, and the mechanism for reciprocating the blade-holder to cause its tilting action.

The two-part case serves to protect its contained stropping mechanism from injury and dampness, its two parts serving also as handles for the. operative manipulation of the stropping mechanism. v V

The twin disks have opposed stropping faces, which faces may be either flat or convex. The disks strop the razor blade along its entire edge in a diagonal direction, the contact of the blade and the stropping disk being at all times of uniform pressure.

Each twin-disk member is mounted on a pinion-driven shaft, and the shafts are set slightly outof parallelism, to secure the proper angle of incidence between the blade and the stropping surfaces, to secure proper stropping contact and prevent the cutting of the stropping surface of the disk by the blade.

Drawings In the drawings Fig. 1 is a plan view of the stropper of my invention with its telescopic case closed.

Fig. 2 is an end view of the same.

Fig. 3 isa plan view of the stropping mechanism, the telescopic case being shown in section.

Fig. 4 is a longitudinal view of the strepper in section taken on the line 44 of Fig. 3.

Fig. 5 is a bottom plan view of the stropping mechanism in extended position, with the casing removed.

Fig. 6 is a plan view of the end of the mechanism shown at the right hand of Fig. 5.

Fig. 7 is a transverse sectional View taken on the line 77 of Fig. 4.

Fig. 8 is a similar view taken on the line 88 of Fig. 3.

Fig. 9 is a detailed fragmental plan view of the blade-holding latch and adjacent .mechanism.

Fig. 10 is a fragmental side view of the twin-disks, illustrating their angulation with reference to each other.

Descm'ptz'on As shown in the drawings, I employ the case A composed of the two telescopic sections 10 and 11.

Mounted within the case section 10 is a frame B wherein are mounted the twin stropping disks 13 and 14, said disks 13 and 14 be- I posite end being provided with a spirallyn.

twisted tongue 24 which extends through the slot 25 in the cross-bar 27 (see Fig. 6). By means of the formation of the tongue 24, a tilting movement is given to the blade-holding bar 21, in the following manner.

The frame D is held in place within the case 11 by means of screws 2626 and consists of a cross-bar 27 and the two-semi-cylindrical side pieces 2828; the cross-bar 27 being spaced from the inner faces of the end of the case 11 by means of spacing-tongues 29 (see Fig. 3)

The razor-blade E is secured in place upon the bar 21 by means of the bifurcated latch bar F, which is locked or released by means of'the latch 31, contoured as shown in Fig. 4, and having a terminal tongue 32. A l0ck ing guard 33 is formed on the cross-head 19, and is cut away as indicated at 34 so'as to permit the latch 31 to be opened torelease the or M) latch bar F and blade IE, only when the tongue 32 is in alinement with the cut-away portion 3 h thus insuring that the blade E will only be removed or replaced when the blade out of contact with the inner face... of the twin disks 1314. The latch 31 is normally held in closed or locking position by means of the coiled spring 3'" mounted as shown in The latch bar F is bifurcated as shown in Fig. 4-, where its lower arm is indicated as 50 and upper arm as 30.

The latch bar F is pivoted at 51 to the bladeholding bar 21, and. has a depending terminal 52 to which the spring is attached as shown in Fig. lVhen the latch 31 is released by linger pressure of the operator on the tongue 32, the latch-bar F is thrown upward by the spring 35 and clear of the case-section 10, tl case-seetion 10 being cutaway at 53 to permit the latch-bar F and razor-blade E to swing clear of the case A; when the arms 30 and of the latch-bar F are sprung apart, permitting the blade E to be removed and if desired, replaced by another blade.

Mode of operation The blade E having been latched in position upon the bar 21, stropping is effected by reciprocating the case sections 10 and 11 into closed and extended position. tilting the blade E with each stroke. as indicated in Fig. 8, so that each side of each edge of the blade is alternately stropped against the inner faces of the twin disks lil l l; these faces as shown in Fig. 8 are preferably convexed to provide a greatly increased contact of the razor-blade and the disk. These stropping faces of the disks 13-ll are covered with any suitable stropping material.

The disks ll'l ll: are actuated by the engagement of their pinions l7 and 18 with the reeks Ell-20 (see Fig. while the tilting of the blade holding bar 21 to accomplish alterhating contact of the edges of the blade 1*) with the upper and lower convexed inner faces of the (llSkS 13 14 (see Fig. 8) is af tected by the engagement of the spirally twisted tongue 24: with-the slot 25 in the crossbar 2? (see Fig.

l l found it desirable to mount the shafts l5 and 16, as shown in Figs. i and 10, with a slight divergence with reference to the length of the stropper although in parellel planes with reference to the width of the stropper, as shown in Fig. 8. This slight angsjulation of said shafts l5 and 16 avoids any :ing of the st-ropping inner faces of the disks 13 and ll, which might otherwise occur.

The structure thus shown and described may be variously constructed as to its con1- ponent parts without departure from my actual invention as defined in the appended claims.

I claim:

1. A stropper for safety razor blades comprising a two part casing, a two part frame within the casing, the elements of which are respectively carried by the elements of the casing, abrasive disks carried by one element of the frame, mezns carried by the other element of the frame for actuating said disks when the elements of the casing and frame are dra n apart and pushed together, a blade holder carried by one element of the frame and arranged between the abrasive disks, and means for oscillating said blade holder and a blade held thereby when the elements of the casing and frame are pulled apart and pushed together thereby to bring the respective edges of a blade against the disks.

2. A stropper for safety razor blades comprising a two part casing. a two part frame within the the elements of which are respectively carried by the elements of the casing, abrasive disks carried by one element of the frame and having pinions. a rack carried l the other element of the frame and engaging the pinions for actuating said disks when the elements of the casing and frame are drawn apart and pushed together. a blade holder carried by one element of the frame and arranged between the abrasive disks. and means including a twisted plate and a cooperating slot in one of the frames for oscillating said blaee holder and a blade held thereby when the elements of the casing and frame are pulled. apart and pushed toher thereby to bring the respective edges of a blade against the disks.

A stropper for safety razor blades comprising a sectional hollow casing, the elements of which are movable toward and away from each other in the same plane. a sectional frame within the casing and wholly enclosed thereby when the casing is closed the sections of the frame being interfitting and slidable with respect to each other in the same pla andv attached and supported respectively by the sections of the casing, opposed sets of abrading disks carried by one element of the frame and having a. pinion. means including rack carried by the other element of the frame and engaging the pinions for rotating the sets of disks when the elements of the casing and frame are moved with respect to each other. a blade holder carried by one of said elements of the frame and operating between the s ts of disks. and means including a twisted plate and cooperating slot in the frame for oscillating the blade holder and a blade carried thereby when the elements of the casing and frame are relatively shifted thereby to bring th respective edges of a blade a gainsl the disks.

In testimony whereof I have hereunto al fixed my signature.

MELCHIOR L. LUEBBEN. 

